EPSS score history for CVE-2021-20439, showing historical risk changes and exploitation probability trends for vulnerability prioritization and security analysis.
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.21% | 1.19% | +0.98% |
| 2 | 2025-03-30 | 0.38% | 0.21% | -0.17% |
| 3 | 2025-03-29 | 0.18% | 0.38% | +0.20% |
| 4 | 2025-03-17 | 0.11% | 0.18% | +0.07% |
| 5 | 2023-03-07 | 0.89% | 0.11% | -0.78% |
| 6 | 2022-04-01 | 9.03% | 0.89% | -8.14% |
| 7 | 2022-02-04 | 18.22% | 9.03% | -9.19% |
| 8 | 2022-01-06 | 4.73% | 18.22% | +13.49% |
| 9 | 2021-07-31 | 0.62% | 4.73% | +4.11% |
| 10 | 2021-07-16 | — | 0.62% | — |